Franklin Electric · Grinder Pump Package
FPS IGP-DPLX Duplex Fiberglass Package
Two 2 HP IGP-M231-15 grinders on a stainless steel rail system in a 36 in fiberglass basin, with duplex control panel, four control floats and two ball check valves. 48, 60, 72 and 84 in depths.
2 x 2 HP IGP-M Grinders
33 GPM Max Flow per Pump
130 ft Max Head
4 in Inlet
208-230V 1Ph
Duplex Panel and 4 Floats Included
36 in Dia x 48-84 in H Basin
Overview
Franklin's fiberglass grinder packages are complete stations for low-pressure sewer service and sewage transfer in light commercial and residential buildings: basin, rail-mounted grinders, control panel, floats and valves, supplied as one package.
The grinder is the 2 HP, 3450 RPM IGP-M231-15 with capacitor start/run motor and built-in overload protection, a high-starting-torque motor for grinding domestic sewage, epoxy-coated cast iron, and a seven-vane, angled-face, non-clogging brass impeller behind cutters that make 414,000 cuts per minute. The pump lifts out on the stainless steel rail system, so it can be serviced without entering the basin.
Genuine Franklin Electric equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
Warranty: 12 months from the date of purchase.
Growth & Multiplex
A duplex station: two grinders alternate lead and lag from the duplex panel, so wear is shared and the second pump starts on the lag float when inflow outruns one pump. The pump count is fixed by the package.
Models & Ratings
| Model |
Part No. |
Basin |
Basin Height |
Discharge Centerline from Top |
| IGP-DPLX3648 |
515207 |
36 x 48 in |
48 in |
12 in |
| IGP-DPLX3660 |
515208 |
36 x 60 in |
60 in |
36 in |
| IGP-DPLX3672 |
515209 |
36 x 72 in |
72 in |
36 in |
| IGP-DPLX3684 |
515210 |
36 x 84 in |
84 in |
Not published |
Source: FPS Wastewater Catalog M5276 (09-25), spec sheet 996799, and Franklin Electric price list 996791 (June 2026). The 36 x 84 in package is in the price list; the catalog publishes no discharge centerline for it.
What Is in the Package
| Item |
Supplied |
| Pumps |
Two IGP-M231-15 (515864), 2 HP, 208-230V 1Ph |
| Control panel |
1026540 duplex grinder panel (515355), 208/230V, integral pump starting components |
| Control floats |
Four CFSW weighted control floats (950266), 115/230V |
| Check valves |
Two cast iron ball check valves |
| Basin |
Heavy-duty fiberglass, 36 in diameter |
| Rail system |
Stainless steel rail system with sealing flange, discharge pipe disconnect and stainless steel lifting chain |
| Valves |
Ball check valve and shut-off valve |
| Inlet |
4 in Adapt-A-Flex grommet |
| Cover |
Solid fiberglass |
| Other |
Stainless steel float bracket; junction box |
Source: FPS Wastewater Catalog M5276 (09-25).
Performance — Will It Do What You Need?
Find your total dynamic head across the top: the vertical lift from the basin to the highest point of the force main plus friction in the pipe. The figure below it is gallons per minute at that head.
| Head (TDH) |
10 ft |
20 ft |
40 ft |
60 ft |
80 ft |
100 ft |
120 ft |
Shut-Off |
| IGP, GPM |
33 |
32 |
31 |
30 |
25 |
20 |
10 |
130 ft |
Manufacturer tabulated points only. 10 ft point: IGP-A and IGP-M Series owner manual 998760 (Rev. 003, 01/23). 20 to 120 ft and shut-off: FPS Wastewater Catalog M5276 (09-25). Shut-off is the head at zero flow, the ceiling rather than a working point.
Franklin places the IGP series in lower-head service, below about 120 ft of total head. For higher heads it points to the dual-stage IGPH high-head series, which reaches 175 ft on its rated curve. The package uses the IGP-M231-15, so this is its curve, per pump.
Before You Buy — The Limits That Decide the Fit
| Limit |
Value |
| Power |
208-230V single-phase; the control panel carries the pump starting components |
| Liquid |
Residential sewage, effluent and wastewater; non-explosive, non-abrasive, non-corrosive |
| Venting |
Vent the basin to local, state and federal plumbing code |
| Head |
IGP pump: best below about 120 ft of total head |
| Freight |
Ships by truck (LTL) |
| App |
None |
